<html>
<head>
</head>

<body>
    <form action="/file3" method="post" enctype="multipart/form-data">
        <input type="text" name="username" /><br/>
        <input type="file" name="file3" /><br/>
        <input type="file" name="file3" /><br/>
        <input type="file" name="file3" /><br/>
        <input type="submit" value="提交" />
    </form>
</body>
</html>